#!/usr/bin/python
#
# Copyright (c) 2008, Mathias Weber
# Copyright (c) 2008, Thomas Stauffer
# All rights reserved.
#
# Redistribution and use in source and binary forms, with or without
# modification, are permitted provided that the following conditions are met:
#
# * Redistributions of source code must retain the above copyright notice, this
#   list of conditions and the following disclaimer.
#
# * Redistributions in binary form must reproduce the above copyright notice,
#   this list of conditions and the following disclaimer in the documentation
#   and/or other materials provided with the distribution.
#
# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
# AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
# IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
# DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE
# FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
# DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
# SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
# CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
# OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
# OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
#
# $Id: example-reflection.py 82 2008-10-12 22:28:21Z tymayos $

import sys
import math

from pandac.PandaModules import ShaderPool
from pandac.PandaModules import TextureStage

import direct.directbase.DirectStart

base.setBackgroundColor(0.0, 0.0, 0.2)
base.disableMouse()

level = loader.loadModel("example-reflection")
level.reparentTo(render)

"""
@todo: remove
texMain = loader.loadTexture("level.png")
level.setTexture(texMain)
tex = loader.loadTexture("river.png")
ts = TextureStage("env")
ts.setMode(TextureStage.MModulate)
level.setTexScale(ts, 0.1, 0.1);
level.setTexGen(ts, TexGenAttrib.MEyePosition)
level.setTexture(ts, tex)
"""

texReflection = loader.loadTexture("river.png")
tsReflection = TextureStage("Reflection")
tsReflection.setSort(1)
level.setTexture(tsReflection, texReflection)

cameraX, cameraY, cameraH = 0.0, -20.0, 0.0

def move(x, y, h):
    global cameraX, cameraY, cameraH
    cameraX += x
    cameraY += y
    cameraH += h
    camera.setPos(cameraX, cameraY, 5.0)
    camera.setHpr(cameraH, 0.0, 0.0)

move(0.0, 0.0, 0.0)

def clearShader():
    level.clearShader()
    ShaderPool.releaseAllShaders()

def loadShader():
    shader = loader.loadShader("example-reflection.sha")
    level.setShader(shader)

loadShader()

base.accept("escape", sys.exit)
base.accept("a", render.analyze)
base.accept("o", base.oobe)
base.accept("1", loadShader)
base.accept("2", clearShader)

base.accept("d", move, [1.0, 0.0, 0.0])
base.accept("d-repeat", move, [1.0, 0.0, 0.0])
base.accept("a", move, [-1.0, 0.0, 0.0])
base.accept("a-repeat", move, [-1.0, 0.0, 0.0])
base.accept("w", move, [0.0, 1.0, 0.0])
base.accept("w-repeat", move, [0.0, 1.0, 0.0])
base.accept("s", move, [0.0, -1.0, 0.0])
base.accept("s-repeat", move, [0.0, -1.0, 0.0])
base.accept("q", move, [0.0, 0.0, 10.0])
base.accept("q-repeat", move, [0.0, 0.0, 10.0])
base.accept("e", move, [0.0, 0.0, -10.0])
base.accept("e-repeat", move, [0.0, 0.0, -10.0])

run()
